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METHOD OF SECURING BLADES TO METAL HANDLES.

No. 402,320. Patented Apr. 30, 1889.

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HORACE GTTINES AND \VlTiTilAM \V. HOLMES, F BRIDGEPORT, ((lNNF UllfUT.

METHOD OF SECURING BLADES TO METAL HANDLES.

SPECIFICATION forming part of Letters Patent No. 402,320, dated April 30, 1889.

Application filed August 16, 1888 Serial No. 282,916. (No model.)

To (LZZ whom it may concern.-

Be it known that we, HORACE GLINES and \VlLLIAM XV. HOLMES, citizens of the United States, residing at Bridgeport, in the county of Fairfield and State of Connecticut, have invented certain new and useful Improvements in Methods of Securing Blades by their Tangs to Metal Handles; and we do hereby declare the following to be a full, clear, and exact de- 1o scription of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Our invention relates to certain novel and useful improvements in the manufacture of tweezers and like articles of cutlery, and has for its object to furnish means for the attachment of the handle to the blades which shall be simple and economical, and whereby said blades maybe much more firmly and securely held in the handle than by the operation of riveting at present practiced in the manufacture of such utensils; and with these ends in View our invention consists in the details of construction and method of operation hereinafter fully set forth, and then recited in the claims.

In order that those skilled in the art to which our invention appertains may fully understand the nature and. use of our improvement, we will describe the same in detail, reference being bad to the accompanying drawings, which form a part of this specification, and in which we have illustrated our method as applied to the manufacture of tweezers.

Figure 1 is a perspective of the finished tweezers; Fig, 2, a plan view of one of the blades; Fig. 3, a similar View of a blade modified as to the piercing thereof; Fig. i, a detail of the slotted shank; Fig. 5, longitudinal section through the blades and the slotted end of the shank; Fig. 6, a modification showing a manicure-blade secured in a handle in accordance with our invention, and Fig. '7 an enlarged detail section through the blades and shanks of the completed tweezers.

Similar letters denote the same parts in all the figures of the drawings.

Aiis the shank, which we prefer to make by turning from rod-steel, but which may, if de 50 sired, be otherwise produced. The forward end. of this shank is slotted, as seen at C, and

any suitablehandle, as E, maybe attached to its rear end.

B are the blades, which are blanked from thin sheet metal and which near their rear ends are pierced, as seen at F. While we prefer to make the hole elongated, as seen at Fig. 2, we can, if desired, use two holes, as at Fig. 3, and still the same result be attained.

In assembling the tweezers the pierced blades are inserted in the slotted shank in proper position. The shank with the blades inserted therein is then subjected to pressure sufficient to drive the metal of the shank downward through the holes in the blades, and as said holes register closely one with the other, as seen at Fig. 7, not only are they thereby secured very firmly together and to the shank, but since the holes are elongated any edgewise play of the blades within the shank is prevented. Heretofore articles of this class have been assembled either by riveting or by means of solder. The riveting process necessitates the drilling of the slotted portion of the shank and both blades, so that the holes may register perfectly, and then the rivet must be very nicely headed down and the completed article afterward smoothed and polished. The necessary accuracy in drilling and. riveting when taken in connection with the finishing required makes this method comparatively expensive. The soldering, when this means is resorted to, must be very care fully effected, since the abutting surfaces are of small area and must be neatly finished. The solder, furthermore, does not make a strong and permanent fastening.

By the use of our method all drilling of the shank is obviated The piercing of the blades is effected simultaneously with the operation of blanking, and since no rivetis employed it is not nccdtul that the holes in the blades shall register perfectly. The upset of the metal of the shank into the openings in the blades forms a fastening much stronger and more permancnt than either rivet or solder, and the operation of assembling the tweezers is rendcred cheaper and easier and requires less nicety of manipulation than by the use of the means heretofore referred to.

*0 particularly intend this method for use in the mamifacture of tweezers, as heretofore set forth; but we do not desire to be limited to its use in that particular manufacture, since it can be employed in any instance where a blade is designed to be secured in a slotted metal shank or handle.

We claim- 1. The method of securing perforated blades to slotted shanks, the same consisting in forcing the metal of the shank inward through the perforations of the blade by pressure applied to the outside of the shank, substantially as specified. V

2. The method of securing blades by their tangs within a metal handle, the same eonsisting in forming an elongated perforation in I 5 the end of the tang, then inserting the pierced end of the tang or tangs within the slotted shank, and finally forcing the metal of the shank inward through the perforations by pressure applied to the outside of the shank, 20 substantially as set forth. V

In testimony whereof we aflix our signatures in presence of two Witnesses.

HORACE GLINES. WVILLIAM WV. HOLMES. Witnesses: S.'H. HUBBARD, WM. J. TANNER. 

